
Math tricks that'll make your calculation 10X faster #2
Vedic Algebra
More tricks for rapid calculation!
Suppose you an equation in the following format: (ax+b)/(cx+d)=p/q, you can solve for x with this formula:
x=(dp-bq)/(aq-cp)
Here's an example:
Fast Way
(2x+1)/(3x+2)=4/5
So let's set the values according to this format (ax+b)/(cx+d)=p/q for every variable
a=2, b=1, c=3, d=2, p=4 and q=5
Now let's fit the values into our formula x=(dp-bq)/(aq-cp)
x=((2)(4)-(1)(5))/((2)(5)-(3)(4))
x=(8-5)/(10-12)
x=-3/2
Normal Way:
(2x+1)/(3x+2)=4/5
Cross Multiply
4(3x+2)=5(2x+1)
12x+8=10x+5
2x=-3
x=-3/2